The number of violins in a symphony orchestra can vary depending on the size and repertoire of the orchestra. Generally, a standard symphony orchestra will have two main sections of violins: the first violins and the second violins.
Typically, there are around 12 to 16 first violins and 10 to 14 second violins. This brings the total to approximately 22 to 30 violins in a full orchestra. However, larger orchestras or pieces that require a bigger sound may include even more violin players.
The reason for the split into first and second violins is to create a richer texture and harmony. The first violins usually play the melody, while the second violins often provide harmony or counterpoint. This division allows for more intricate musical interactions and enhances the overall sound of the orchestra.